Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
18005excellentexcellent31excellent
170012excellentexcellent21excellent
160010excellentexcellent21excellent
150012excellentexcellent21excellent
14009excellentexcellent11excellent
13007excellentexcellent11excellent
12006excellentexcellent11excellent
11006excellentexcellent11excellent
10007excellentexcellent11excellent
090010excellentexcellent11excellent
08009excellentexcellent11excellent
070014excellentexcellent21excellent
060015excellentexcellent21excellent
050013excellentexcellent21excellent
040014excellentexcellent21excellent
030020excellentexcellent41excellent
020025goodexcellent31excellent
010050goodexcellent61excellent
000043goodexcellent71excellent
230038goodexcellent61excellent
220037goodexcellent61excellent
210031goodexcellent61excellent
200030goodexcellent61excellent
190045goodexcellent71excellent